Spectrogram from byte array in javascript











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I have a python - django web application in which I have to represent features of an audio file as a spectrogram. I have the audio file preprocessed with fft computed and normalized and saved in my DB. Now I have that data in the form of a byte array where each item in the array represents the frequencies in a single time interval (e.g. 1st item in the array represents the values from 1,1 - 1,n of the spectrogram)



Is there a javascript library I could use to visualize this as a spectrogram? A tutorial would be helpful. I found several tutorials where .wav file is converted to spectrogram, but not from a byte array (I only have the byte array, and do not have access to the original audio file).






javascript d3.js audio spectrogram







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    up vote
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    down vote

    favorite












    I have a python - django web application in which I have to represent features of an audio file as a spectrogram. I have the audio file preprocessed with fft computed and normalized and saved in my DB. Now I have that data in the form of a byte array where each item in the array represents the frequencies in a single time interval (e.g. 1st item in the array represents the values from 1,1 - 1,n of the spectrogram)



    Is there a javascript library I could use to visualize this as a spectrogram? A tutorial would be helpful. I found several tutorials where .wav file is converted to spectrogram, but not from a byte array (I only have the byte array, and do not have access to the original audio file).






    javascript d3.js audio spectrogram







    share|improve this question


























      up vote
      -1
      down vote

      favorite









      up vote
      -1
      down vote

      favorite











      I have a python - django web application in which I have to represent features of an audio file as a spectrogram. I have the audio file preprocessed with fft computed and normalized and saved in my DB. Now I have that data in the form of a byte array where each item in the array represents the frequencies in a single time interval (e.g. 1st item in the array represents the values from 1,1 - 1,n of the spectrogram)



      Is there a javascript library I could use to visualize this as a spectrogram? A tutorial would be helpful. I found several tutorials where .wav file is converted to spectrogram, but not from a byte array (I only have the byte array, and do not have access to the original audio file).






      javascript d3.js audio spectrogram







      share|improve this question















      I have a python - django web application in which I have to represent features of an audio file as a spectrogram. I have the audio file preprocessed with fft computed and normalized and saved in my DB. Now I have that data in the form of a byte array where each item in the array represents the frequencies in a single time interval (e.g. 1st item in the array represents the values from 1,1 - 1,n of the spectrogram)



      Is there a javascript library I could use to visualize this as a spectrogram? A tutorial would be helpful. I found several tutorials where .wav file is converted to spectrogram, but not from a byte array (I only have the byte array, and do not have access to the original audio file).






      javascript d3.js audio spectrogram




      javascript d3.js audio spectrogram






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      edited Nov 22 at 8:40

























      asked Nov 22 at 8:15









      Visahan

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